This study deals with the structural and exegetical relationship between pre-existence and incarnation in the dynamics of John's Prologue (John 1:1-18). It discusses the point in the narrative at which the shift from the pre-existent Logos to the incarnate Christ takes place and, therefore, the perspective from which the individual parts of the passage (vss. 1-5; vss. 6-13; vss. 14-18) should be interpreted. By making a detailed and comprehensive analysis of the text and evaluating all contrasting views on the subject, the book shows the essential chronological order of the narrative, whose climax (vss. 14-18) is not the announcement of the incarnation proper, but rather a profound theological reflection on the significance of that event based on the covenantal traditions of the exodus story and later prophetic expectations. Contents: The Pre-existent Mode of the Logos (John 1:1-5) - The Ministry of the Incarnate Logos (John 1:6-13) - The Covenantal Meaning of the Incarnation (John 1:14-18).